The week in pictures: 8 February 2013

The Orion nebula is featured in this sweeping image from NASA's Wide-field Infrared Survey Explorer, or WISE. The nebula (also catalogued as Messier 42) is located in the sword of Orion, hanging from his belt of three stars. The star cluster embedded in the nebula is visible to the unaided human eye as a single star, with some fuzziness apparent to the most keen-eyed observers.Picture: EPA/NASA / JPL-Caltech / UCLA